Apparatus for vaporizing and burning fuel-oil for steam-boilers



C. H. TONDEUR. APPARATUS Fon vAPomzfN'GL AND BURNING FUL OIL FOR STEAM BOILERS.A 'APPLICATION FILED FEB. 14. 1920.

Patented Feb Arromvmr Pimmuhm @mi WILNILMCORMW.

"UNITED Smfs-.Pmm OFFICE y cLnoN 11.*.'roNDEtrn, or canasrofra, NEW Yeux.

j APPARATUS ron vnromzrne AND Buminve runt-oir. `'nonjstru.siii-nannies,

T all 4'milio/m it 'may concer/iii I Be it-knovvn that I, @LEON State of New York, have invented new and useful Improvements in Apparatus for Vaporizing and Burning Fuel-Oil for Steam- Boilers, of which the 'follovving,'taken ing connectionx vvithv the accompanying dravvin s, is a full, clear, and'exact descr1-ption.

. I'his inventionvrelates to Vcertain improveasa fuel for steam boilers andanalogous tion chamber.

vuses,-and refers more particularly to the con- 'struction of the oil burner and to the means for supplying heated air thereto for supporting the combustion of the fuel as it emerges 'from the burner into thelcombus' The main Objectis to provide simple, practical and efficient means for more e ecat the same time, to maintain a suliicient sup- .ply of heated air under pressure' to consume` practicallyl the entire uel vapo'rland re sultantgases, not only for economical pur- "poses, but to reduce to a minimum the escape of combustible products to Vthe atv mosphere.

Another object is to cause the air `to flow through tortuous closed conduits Within the combustion chamber, and in a general .direction opposite to that in'whichthe vaporized fuel is projectedfor the purpose ofv heating the air to ahigh degree in transitto the 'Y burner.

` Other objects and uses relating to specific parts of the apparatus will be brought out in the following description:

In the drawings;

Figure l is a longitudinal vertical sectional view of a steam boiler housing show# `ing in elevation a steam boilerand my iinproved fuel vaporizor-and burner vvin operative position.

Fig. Zie a horizontal sectional vievv of the samehousing in a planebeneath the boiler or just above the burners `and `air supply pipes, which latter are shovvnin top plan, except that the oil supply pipes are shown in section. n

F ig. 3 is 'an enlarged vertical sectional View of one of the burners and adjacent por. tion of the front Wall of thev boiler housing, the major portion 0f the air conduit being v brokenavva'y.l p Y l) H. ot -C'anast'ota, in the county7 of Madisomin the `Specification of Letter'islatent. *Patented`Feb 1s 1921!- iilmiifauta` ineaFebruary4 1.4,"-192o- 'semi No.' 358,752. 1 i i i illustrated, :the fuel vaporizing and vburning apparatus 4is mounted mainly Withhorizontal return Huesteam boiler .r2-

ing .chamber fl-fand an air supplypipe --5--5 p T-liefhousing.' ,--lis provided with -ah 'combustion vchamber "6#- underlying the "boiler'f--Q-fand communicating 'with the ments inv apparatus for burning crudev oil f rear `ends of the fines of the boiler to allow the unburned roducts of combustion -to pass through said flues to al smoke flue-*Z-- ,l yat thexfront ofthe boiler, the boilercasin orhousing-1 being also provided wit the usual baliie'plate .48 and 9 to cut o`I`- direct communication with 'the combustion-` air supply pipes "5, arranged side by side lengthwise of the boiler and extending into the combustionfc'hamber -6,-, each nozzle-3#- being extended through a suitable opening 3 in/the ront'wall ofthe cas- `supplypipe --l1M having a valve l2-e' `for controlling the supply ofy oil to the noz-S zle, the inner end of said nozzle being prosuitablev gland -15- in the outer end 'of a nozzle, and is provided with a hand ypiece latetheflow of the oil through the outlet -13, the stem ofthe valve being `provided with a screvv thereto -17- engaging a w threaded aperture in thevgland -fl-F- to permit desired adjustment of the valve by reduction thereof.

@The y mixing chamber `is located Within the combustion chamberA-G- atlthe nozzle -3- is secured,`V said mixing chamberbeing-also provided 4with an additional aperture 18 for receiving the ad` jacent end of the air pipe chamber 4- to facilitate the disintegration and Vaporizing of the fuel which may be pro'ected into the'said mixing chamber throug the valve outlet 13 of the nozzle 3 and also to permit the exit of the mixed vaporzed. fuel and air into thecombustion chamber 6 where the mixture is burned for `converting the water in the boiler to steam, and also for heating the air in the pipe 5 The air pipes 5 extend centrally through the combustion chamber from front to rear, and through the front and rear Walls of the casing 1 the front end of each pipe being provided with a return bend 20, which is located just in front of the -front wall of the housing 1 and is connected by a return branch '5 of the mixing 'chamber' 4 through the opening 18 or just below and in 'close proximity to the inner discharge end of the nozzle 3 The perforated plate 19 is disposed a short distance from the delivery end of the nozzle 3 and serves as a baffle plate to spread and pulverize the oil and to assist the valve nozzle 1,3 in vaporizing said `oil and causing it to mix thoroughly with the air before beingv discharged into the combustion chamber.

The inner end of the nozzle 3- projects 35,'slightly beyond the inner end of the branch -creasing thearea of the air pipel so'that the heated air which is introduced into the mixing chamber under pressure may assist in drawing the fuel from the mouth of the nozzle into said mixing chamber, which is of relatively large area, as compared with that of the nozzle 3 and air inlet, to allow the fuel and air to become thoroughly mixed before passing through the perforations of the plate 19.

The intermediate portion of the air pipe 5 extending through a bridge wall 21 beyond casing 1 and the portion thereof b tween said bridge wall and rear wall of t e casing is tortuous by vertical corrugations 22 thereby greatly in- -conduit exposed to the heated products of combustion as they areI deiected downwardly over the bridge kwall 21 in transit to the rear ends of the valves at the boiler 2-, thereby causing the air to enter the mixing chamber at a sufficiently high degree of heat to expedite the vaporization of the fuel immediately upon its entrance into the mixing chamber through the nozzle 3 A valve or damper 23 is placed within the return bend 20 of the air pipe 5 and-is adjusted at will to regulate the volume of heated air entering themixing chamber 4 the valve 12, while the passage of the oil able source of power not shown.

I have shown each of the nozzles 3 provided with a separate oil supply pipe l1 but it is evident that they may be connected toa single supply pipe leading from a main reservoir not shown, in which case, each of the pipes ll would bccome a branch pipe and the passage of the oil therethrough would be controlled liv SO from the nozzle would be controlled by thc valve 14, which, together with the air valve 28, enables the operator to regulate the flow of both oil and air to produce the desired mixture in the chamber l which mixture then passes through the perforated plate 19 and is ignited and burns in the combustion chamber G to convert water in the boiler 2 to steam, and, at the same time, to heat the air passing through the pipe 5 and its corrugations 22.

What I claim is: I

l. The combination with a return flue boiler and a combustion chamber underlying theboiler, a mixing chamber within the combustion chamber` and provided with a fuel inlet and an air inlet, and also provided with a perforated wall forming an outlet, a nozzle connected to the fuel outlet and provided with a valve for regulating the passage of fuel into the mixing chamber, a fuel supply pipe connected to the nozzle and provided with a fuel regulating valve, an air pipe extending entirely through the combustion chamber from front to rear and having its front end connected to the air inlet of the mixing chamber and its other end communieating with the atmosphere.

2. The combination with a, return flue boiler and a combustion chamber underlying the boiler, a mixing chamber within the combustion chamber and provided with a fuel inlet and an air inlet, and also provided with a perforated wall forming an outlet, a nozzle connected to the fuel outlet and provided with a valve for regulating the passage of fuel into the mixing chamber, a fuel supply pipe connected to the nozzle and provided with a fuel regulating valve, an air pipe extending entirely through the combustion chamber from -front to rear and having its front end connected to the air inlet of the mixing chamber and its other end communicating with the atmosphere, said air pipe having portions thereof within the 1,25 combustion chamber corrugated for exposing a greater area thereof to the heated products of combustion.

3. The combination with a return Hue boiler and a combustion chamber underlying Laeep'fe the boiler, a mixing chamber within the combustion chamber and provided with a fuel f inlet and an air inlet, and also provided with a perforated 'wall forming an outlet, a nozzle connected to the uel outlet and provided with a valve for regulating the pas- Sage of fuel into the mixing chamber, a fuel supplyl ypipe connected to the nozzle and provided with a fuel regulatingvalve, an air pipe extending entirely through the oombustion chamber from front to rear and hev-4 ing its rontend Connected to the air inlet of the mixing chamber and its other end communicating with the atmosphere, and a blower connected to the rear end of the air.

inlet in its front end and havingV e perfon rated wall in its rear end forpermitting the discharge of the Jfuel mixture into the co1nbustion chamber, a nozzle connected to the fuel inlet of 'the mixing chamber and provided with a valve for controlling the sup ply of fuell to said mixing chamber, an oil supply pipe connected to the nozzle, an air pipe extending entirely through the co1nbus-l tion chamber from front to rear and having' its front end connected to the air inlet to the mixing chamber, the portion of said air pipe between the bridge wall and rear wall of the housing being corrugated vertically, and means for forcing air through the air ipe. p

p In witness whereof I have hereunto set my hand this 2nd day of February, 1920.

oLno'N H. Tonnnrne.`

Witnesses:

H. E. CHASE,Y 'R. G. CAuRoLL. 

